Error: "External ID not found in the system" in OpenERP

I get an error when trying to install a module. I believe the external ID is relative to the view_id:

raise ValueError('External ID not found in the system: %s' % (xmlid))
ParseError: "External ID not found in the system: nk_test.bom_where_use_form" while parsing /opt/odoo/odoo/addons/nk_test/mrp_where_bom.xml:4, near
<record id="action3" model="ir.actions.act_window">
            <field name="name">Where Use</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">product.template</field>            
            <field name="view_type">form</field>
            <field name="target">new</field>
            <field name="view_id" ref="bom_where_use_form"/>
        </record>

      

        
        
        
      

    

Here is my xml file. The "bom_where_use_form" is defined and I don't know why it is not visible.

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
         <record id="action3" model="ir.actions.act_window">
            <field name="name">Where Use</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">product.template</field>            
            <field name="view_type">form</field>
            <field name="target">new</field>
            <field name="view_id" ref="bom_where_use_form"/>
        </record>
        <record id="ir_BOM_structure3" model="ir.values">
            <field eval="'client_action_multi'" name="key2"/>
            <field eval="'product.template'" name="model"/>
            <field name="name">Where Use</field>
            <field eval="'ir.actions.act_window,'+str(action3)" name="value"/>
        </record>


        <record id="action4" model="ir.actions.act_window">
            <field name="name">Where Use</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">product.product</field>            
            <field name="view_type">form</field>
            <field name="target">new</field>
            <field name="view_id" ref="bom_where_use_form"/>
        </record>
        <record id="ir_BOM_structure4" model="ir.values">
            <field eval="'client_action_multi'" name="key2"/>
            <field eval="'product.product'" name="model"/>
            <field name="name">Where Use</field>
            <field eval="'ir.actions.act_window,'+str(action4)" name="value"/>
        </record>


         <record id="bom_where_use_form" model="ir.ui.view">
            <field name="name">bom.where.use.form</field>
            <field name="model">product.template</field>
            <field name="priority" eval="20"/>
            <field name="type">form</field>
            <field name="arch" type="xml">

                <field name="text_field" on_change="onchange_template_id(100)" readonly="1" /> 
            </field> 
         </record>

    </data>
</openerp>

      

        
        
        
      

    

I am wondering what is missing.